Document zdQyELb7kGMRM1Y1v9jrMQbV0
HEATINC VENTILATING AIR CONDITIONING GUIDE 1943
Table.4. Coefficients of Transmission (U) of Masonry Walls with Various Types of Veneers^
jr% in Btu P*, tour Per square foot per degree dffference tn temperature between the air on the two sides, and are based on a wtnd velocity of 16 mph.
TYPICAL CONSTRUCTION
TYPE OF WALL
Facing
Backing
Wall No.
4 in. Brick Veneer*
6 in. -. 10 IS: Hollow TUe-
12 in.
37 38. 39 40
4 in. Brick Veneer*
6 in.
10 in. Concrete 16 in.
41 42
43
4 in. Brick Veneer*
8 in. Cinder Blocks 8 in. Cinder Blocks -- Cores filled with granulated cork, 5.12 lb per cu ft 12 in. Cinder Blocks 12 in. Cinder Blocks -- Cores filled with granulated cork, 5.24 lb per cu ft
. 8 in. Concrete Blocks 8 in. Concrete Blocks--Cores filled with granulated cork, 5.14 lb per cu ft
12 in. Concrete Blocks 8 in. Burned Clay aggregate Block 8 in. Burned Clay aggregate Block--Cores filled with gran ulated cork, 5.06 lb per cu ft -
12 in. Burned Clay aggregate Block
12 in. Burned day aggregate Block--Cores filled with gran ulated cork, 5.6 lb per cu ft
44
45 46
47 48
49 50 51
52 53
54
^ 4 in. Cut-Stone Veneer*
8 in.
12 in. Common Brick 16 in.
55 56.57
4 in. Cut-Stone Veneer*
8 10
in. in.
Hollow
Tile4
12 in.
58 59 60 61
4' in. Cut-Stone Veneer*
10 in. Concrete 16 in.
62
63 64
Computed from factors marked by * in Table 2.
6Based on the actual thickness of 2-in. furring strips.
' . .-
The 6-in., 8-in. and 10-in. tile figures are based on two cells in the direction of heat no
tile is based on three cells in the direction of heat flow.
The
CHAPTER 4. HEAT TRANSMISSION COEFFICIENTS
INTERIOR FINISH
Uninsulated Walu
Insulated .Walls
& |8s -
o0 a s,
3 S fa 1 e
AB
og a 0e*p2
IT 1-3 cl, .a
c
Plaster (% in.) on metal lath--furred
5 $2.g 1
s
0 O'--"
0O"d^ J*s
ill3 d IS fisnS
?j.
T0.0a |]
'"Nr*
A 0
jlJsft' it? |LT
ill as s.sJ
J-B'S cu-c.2
DE
F
GH
i
Plaster
plaste
(H rbo
in-) ard
(
oHn
in.)--air spacefaced
J
on one side with bright' aluminum
foil - cemented' to
plasterboard
4K
Plaster ( H In.) on
metal lath attached to furring strips (2 i n.6)--rock wool
fill U H in.*)'
--83 ,'3 ":2_n
Tjs Unh <3S*.. |5 -s3|S SasssSs
.L
0.36 0.34 0.24 0.25 0.24 0.34 0.33 0.24 0.25 0.24 0.34 0.32 0.23 0.24 0.23 0.27 0.26 0.20 0.21 0.20
6.19
0.19 0.19 0.16
0.19 0.15
0.18 0.14 0.18 0.14 0.16 0.13
0.13 0.12 0.12
0.11
0.18 0.18 0.18 0.16
0.11
0.11
0.11 0.10
0.17
0.17 0.17
0.15 x
0.57 0.53 0.33 0.35 0.33 0.24 0.48 0.45 0.30 0.31 0.30 0.22 0.39 0.37 0.26 0.27 0.26 0.20
0.23 0.17 0.14 0.22 0.16 0.14 0.19 0.15 0.13
0.23 0.22
0.20
0.13 0.12 0.11
0.21 0.20 0;18
0.35 0.33 0.24 0.25 0.24 0.19 0.18 0.14 0.12
0.20 0.19 0.16 0.16j 0.16 0.13 0.13 0.11 0.10 0.31 0.30 0.22 0.23 0.22 0.18 0.17 0.14 0.12
0;18 0.18 0.15 0.15 0.15 0.44 0.42 0.28 0.30 0.28
0.13 0.21
0.12 0.10 0.09 0.21 0.16 0.13
0.34 0.32 0.24 0.25 0.23 0.40 0.38 0.26 0.28 0.26
0.31 0.29 0.23 0.23 0.22
0.19 0.20
0.18
0.18 0,14 0.20 0.15
0.17 0.14
0.12 0.13
0.12
0.17 0.16 0.14 0.14 0.14 0.12 0.29 0.28 0.21 0.22 0.21 : 0.17
0.12 0.10 0.09 0.17 0.13 0.12
0.14 0.14 0.12 0.12 o;i2 o.io. 0.10 0.09 0.08
0.18
0.13 0.17
0.13 0.21
0.18 0.20 0.17
0.i2 : 0.17
o.io
0.11 .
0.17
0.09 0.11
0.12 0.16
0,08 ` 0.12
0.12 ` 0.19
oil 0.11
.0.11
0.17 0.18
. 0.16
0.08 0.10
0.11 0.16
. 0.07
0.10
0.37 0.35 0.25 0.26 0.25 0.28 0.27 0.21 0.21 0.21 0.23 0.22 0.18 0.18 0.18
0.19 0.19 0.15 0.13 0,17 0.16 0.13 0.12 0.15 . 0.14 0.12 0.11
0.19 0.17
0.15
0.11 0.10
0.095
0.17 0.15
0.14
0.37 0,35 0.25 0.26 0.25 0.36 0.34 0.24 0.25 0.24 0.35 0.33 0.24 0.25 0.24 .0.28 0126 0.20 0.21 0.20
0.20
0.19 0.19 0.17
0.19 0.15 0.19 0.15 0.18 0,14 0.16 0.13
0.13 0.13 0.12
0.11
0.19 0.18
0.18 0.17
6.11 0.11
0.11 0.10
0.18
0.17 0.17
0.15
0.61 0.56 0.34 0.36 0.34 0.51 0.47 0.31 0.32 0.31 0.41 0.38 0.26 0.28 0.26
0.25 0.23 0.20
0.24 0 18 0.15 0.22 0.17 0.14 0.20 0.15 0.13'
0.24 - 0.22
0.20
0.13 0.12 0.11
0i22 *-
0.20 0.18
*Calculations include cement mortar-(H in.) between veneer or facing and backing. 'Based on one air cell in direction of heat flow. . waterproof (not vaporproof) membrane should be provided between the outer material and the, insulation fiti to prevent possible wetting by absorption and a', subsequent lowering of efficiency.
105